TY - RPRT TI - Bone position estimation from skin marker co-ordinates using global optimisation with joint constraints. AU - T W Lu AU - J J O'Connor PY - 1999 DO - 10.1016/s0021-9290(98)00158-4 UR - https://pubmed.ncbi.nlm.nih.gov/10052917/ ID - 10052917 ER -